名词
中文翻译：Unknown
同义词：
['Iron rod', 'Iron stake', 'Iron pillar']
例句：
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1. The iron stakes weredriven deep into the ground to support theroof.
铁桩被深深地打入地面以支撑屋顶。
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2. The iron rod was used tosecure the door shut.
铁棒用来固定门关闭。
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3. The iron pillars were placedat the corners of the building to providesupport.
铁柱放置在建筑物的角落以提供支撑。